TPO 24 Conversation 1Student& Clerk in the Bookstore StudentHi. Can you tell me where to find New Kind of Science? By, uh, by Stephen Wolfram.ClerkOKStudent...uh, I couldn't find itClerkOK. Let
TPO 24 Lecture l Biology (Crocodile Vocalization)ProfessorOK. For today, let's look at a reptile, a predator that hasn't evolved much in the last seventy million years. No discussion of reptiles would
TPO 24 Lecture2 Art History (Modern Dance)ProfessorAs we have been studying, ballet, the classical ballet, is based on formalized movements, specific positioning of the arms, feet and the body. So, no
TPO 24 Conversation 2Student& Geography ProfessorStudentHi. Professor Brown. ProfessorHi. Paul. What can I do for you? StudentI have a question about the final exam. I mean, will it cover everythi
TPO 24 Lecture3 Archaeology (Megafauna in North America)ProfessorBetween 11,000 and 10,000 B.C.E., North America was populated by a wide variety of great beasts, like mammoth and mastodons, both eleph
TPO 24 Lecture4 Astronomy (Shield Volcanoes on Venus)ProfessorMany people have been fascinated about Venus for centuries because of its thick cloud cover, this so-called planet of mystery and all of t
2009年英语四级考试听力真题原文汇总 2009年12月英语四级考试听力真题原文（短对话） 2009年12月英语四级考试听
2011年大学英语四级考试听力真题原文汇总 2011年6月英语四级考试听力真题原文（短文对话） 2011年6月英语四级考
TPO 18 Lecture 3 European HistoryIn order to really study the social history of the Middle Ages, you have to understand the role of spices. Now, this might sound a little spurring, even a little stran
TPO 18 Lecture 4 BiologyA:Well, it’s finally looking like spring is arriving. The last of the winter snow would be melting away in a few days. So before we close today, I thought I’d menti